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Austenitic precipitation hardening stainless steel forge piece and machining method thereof

A precipitation hardening and processing method technology, applied in the field of austenitic precipitation hardening stainless steel forgings and its processing, can solve the problem of low comprehensive effect, low balance of yield strength, tensile strength and corrosion resistance of stainless steel forgings, comprehensive forgings Low performance and other problems, to achieve the effect of high balance, strong low temperature resistance and strong weather resistance

Inactive Publication Date: 2017-03-29
陆照福
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The above improves the corrosion resistance of forgings, but the comprehensive performance of forgings is low; at the same time, from the perspective of current forging processing technology, stainless steel forgings in machinery and equipment operating under harsh conditions such as oil mining machinery, rail transportation technology or military products The balance of yield strength, tensile strength and corrosion resistance is relatively low, the overall effect is not high, and there are improvements

Method used

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  • Austenitic precipitation hardening stainless steel forge piece and machining method thereof
  • Austenitic precipitation hardening stainless steel forge piece and machining method thereof
  • Austenitic precipitation hardening stainless steel forge piece and machining method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Table 1 Mass percentage of each element in an austenitic precipitation hardening stainless steel forging of Example 1

[0030] components mass percentage components mass percentage C 0.3％ Ni 1.00％ mn 3.00％ Mo 1.80％ Si 1.00％ Cu 5.00％ P 0.025％ Nb 0.80％ S 0.04％ V 0.01％ Cr 20％ Fe margin

Embodiment 2

[0032] Table 2 Mass percentage of each element in an austenitic precipitation hardening stainless steel forging of Example 2

[0033] components mass percentage components mass percentage C 0.07％ Ni 1.00％ mn 1.00％ Mo 1.60％ Si 0.50％ Cu 5.00％ P 0.02％ Nb 0.90％ S 0.10％ V 0.01％ Cr 10％ Fe margin

Embodiment 3

[0035] Table 3 Mass percentage of each element in an austenitic precipitation hardening stainless steel forging of Example 3

[0036]

[0037]

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Abstract

The invention discloses an austenitic precipitation hardening stainless steel forge piece and a machining method thereof. The problem that according to an existing machining method, a manufactured austenitic stainless steel forge piece is low in comprehensive performance is solved. According to the technical scheme, the austenitic precipitation hardening stainless steel forge piece comprises chemical components including, by mass percent, not larger than 0.09% of C, not larger than 2.00% of Mn, not larger than 1.00% of Si, not larger than 0.025% of P, 4.00% to 8.00% of Ni, 0.20% to 0.80% of Mo, 1.00% to 4.00% of Cu, not larger than 0.70% of Nb, not larger than 0.20% of V and the balance Fe. The manufactured forge piece has the beneficial effects of being high in strength, high in toughness, resistant to corrosion and wear, high in weather resistance, resistant to high temperature and low temperature, high in stability and the like.

Description

technical field [0001] The invention relates to the technical field of austenitic stainless steel processing, in particular to an austenitic precipitation hardening stainless steel forging and a processing method thereof. Background technique [0002] At present, petrochemical and coal chemical industries are developing rapidly, and the scale of equipment tends to be larger. The weight of hydrogenation reactors in petroleum and coal-fired mining machinery and petrochemical core equipment has exceeded the kiloton level. Gradually, domestic mining machinery and reactors with plate-welded structures are being upgraded to forge-welded structures. [0003] The patent application with publication number CN1432073 discloses a method for enhancing the corrosion resistance of austenitic stainless steel, the method comprising: removing a sufficient amount of material on at least part of the surface of the steel to provide a treated surface with a critical crevice corrosion temperature...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/58C22C38/02C22C38/04C22C38/44C22C38/42C22C38/48C22C38/46C22C33/04
CPCC22C38/58C22C33/04C22C38/02C22C38/04C22C38/42C22C38/44C22C38/46C22C38/48
Inventor 陆照福
Owner 陆照福
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